Asatkar, Archana, and Sikha Pahare. “A Green and Efficient Sythesis of Pyranopyrazole Derivatives Catalyzed by Copper(II) Triflate in Aqueous Medium”. Asian Journal of Organic & Medicinal Chemistry 6, no. 4 (December 31, 2021): 322–326. Accessed December 23, 2024. https://asianpubs.org/index.php/ajomc/article/view/33219.